package com.example.huadi1.mapper;

import com.example.huadi1.dto.Course;
import com.example.huadi1.dto.CourseSelection;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;

public interface CourseSelectionMapper {
    public Integer getStudentNum(Integer CourseId);
    public List<Integer> getCourseIdByStuId(Integer StuId);

    List<Integer> getAllStuId();


    List<CourseSelection> queryReturnBook();
}
